Thomas n



v T- N. DAVEY.

S EAM TRAP.

No. 60,622., Pmm(1/119 1a, 1866.

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IMPROVEMENT IN STEAM TRhPS.

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TO ALL WHOM IT MAY CONCERN: r p

Be it known that I, THOMAS N. Dsvsr, oi Jeflersonville, in the county of Clark, and State of Indiana, have invented a new and improved Steam Trap; 'and I do hereby declare that the following is a full, clear, and exact description thereof. V

The object of this invention is to automatically relieve steam cylinders, steam pipes, and all other apparatus where steam is used, from condensed steam or water of condensation; also, to give the engineer or operator at full and easy control of the trap-valve under all circumstanoea whether under the pressure of steam or not, thereby giving all the advantages of the ordinary cook or faucet and steam trap combined.

To enable others skilled in the artto' make and use my inventlolyl will proceedto describe its construction and, operation, reference being had to the accompanying drawings, forniinga part of this specification, and to the letters of reference marked thereon, in which-- r i Figure 1 represents a side e'levation of the trap complete; and I Figure 2 is a vertical section of the trap through the line 2: a: offigill.

The same letters of reference indicate like parts. v V A is the stem or upper portion of the trap, which is-attacned to the'steam cylinder or steam pipe, and

which first receives the steam. It is enlarged at its lower part, and its interior lower portion forms a chamber.

B is the case or lower portion of the-trap; it is screwed into A. at its upper end, as seen in the drawing. In this case, B, of the trap is the valve-seat, :1, upon which the valve, C, works. This valve, 0, is kept steady and in placeloy'wings upon it below she sent, which are guidedl "thkt portion of B, the water escapin'g be'tween the wings into the chamber, D, below. This valve is prevented from rising too high by stops, it, which are mere projections from the inside surface of the chamber in A over the valve. There is a short stem on the valve, 7

C, extending below the wings, and which serves as a guide for the spiral spring, E, by which the valve is raised when it is in'operation. The case, B, is enlarged below the wings of the valve, 0, forming the chamber, D.

The spiral spring, E, works in this chamber. Transversely across this chamber, D, there is a cross-bar, F, which forms a seat and guide for the adjustable spring-seat, G, which is a round disk, from which astem extends both above and below, or from its upper and lower sides; the lower oneis shown at f; this stem extends through the cross-bar, F, and its lower end rests on the cam or key, H. Through the lower portion of the case, B, (horizontally,) there is formed a faucet-barrel, to which is fitted a plug, which fits tightly in the barrel, and is secured to its place by a washer and nut in the nsual.manner. The middle portion of this plug is c ut away and forms a cam or eccentric, H, upon which the lower stem of the spring-seat rests; as represented in the drawing. On the other end of this faucet-plug there is an arm, J, by which it is-operated or oscillated back and forth. The eam H, acting through the arm or handle, J, adjusts the spring-seat, G, first t'o aheight sufli-.

cient to tighten the spring to suit difierent pressures of steam on the valve, C, and thento throw the upper stem of the spring-seat, G, up against-the-stem of the valve, 0, raising'it so as to allow a clear exit throughout the.

trap, the exit being at is. A t D The operation of the trap will be readily understood. The upper end 01A being screwed into the'cylinder or steampipe, the steam enters and presses down the valve, 0, and holds it to its seat until the cylinder is exhausted of steam. The valve is then 'of course relieved ofpressurev and is immediately thrown up by the spring, E, and the water of condensation or condensed steam escapes down into and through the chamber, D, having its exit at It. By moving the arm or handle, J, the cam or eccentric, H, is thrown up against the lower stem of the spring-seat, G, first tightening the spring to suit difierentpressureii of stea or, in case of necessity,- raising the valve, 0, thus allowing free exit of water, or other matter, at the option of the attendant.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is-

1. The stem or upper portion A, and the case B, when combined with the faucet-barrel, cam or key H, and

the arm or handle J, constructed substantially as described. I V

2. I claim the cam H when used in connection with the adjustable spring-seat Gand spring E, substantiallyas herein shown and described.

THOMAS N. DAVEY.-

Witnesses:

Josnrn B. Mum, THOMAS DAVEY. 

